When a baby smiles at you, it's almost impossible not to smile back. This spontaneous reaction to a facial expression is part ...
Facial expression control starts in a very old part of the nervous system. In the brain stem sits the facial nucleus, which ...
News-Medical.Net on MSN
Brain signals shape facial expressions before movement begins
Every time we smile, grimace, or flash a quick look of surprise, it feels effortless, but the brain is quietly coordinating an intricate performance.
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